A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5985-00-655-7589
NSN 5945-01-179-8867
NSN 5910-01-312-6654
NSN 6620-01-078-6372
NSN 6145-00-655-2738
NSN 5910-00-409-3009
NSN 6220-00-682-8292
NSN 6145-00-521-0001
NSN 5960-00-736-8568
NSN 5910-01-425-2313
NSN 5999-01-160-6095
NSN 5996-00-727-8664